BioShock 2 is the sequel to the 2007 first-person shooter video game developed by 2K Marin and Irrational Games. If you enjoyed the first, read on to find out if BioShock 2 (PS3) is worth getting.

There’s this little moment in BioShock 2 that replays endlessly in my mind’s eye. The Little Sister looked rather pitiful, with her sad albeit creepy glowing eyes and that innocent squeaky girlish voice that pleads with me to be nice to her.

Little Sister, in the underwater world of Rapture, are helpless little zombie girls who exist to harvest a precious resource called ADAM. Two options present themselves forlornly: Harvest, or rescue her.

Harvesting her — the more tempting option — would give me lots of precious ADAM, the energy currency that would buy me powers and abilities. The killer advantage being that, yes, the little sister ends up dead so there’s no need to drag her around.

On the other hand, rescuing her, like helping Singaporeans on the streets, would hardly merit a ‘Thank You’ or less. On the surface, an easy quickie decision – but in the world of Bioshock 2, it took ten minutes of internal debate before I came to the inevitable conclusion.

I would rescue her. And so I did.

Agonising moments like this play out time and again, as you move through the dream-like underwater world of Rapture.

(Rapture: Think of an abandoned Disneyland 20,000 leagues under the sea, but filled with scary mutants called Splicers who most certainly do not sing tunes like ‘Under The Sea’. No finding Nemo here either).

At times, it felt stupid to waste so much time and effort harvesting ADAM with each Little Sister you come across, since you have slog to defend against dozens of Splicers who are drawn to the harvesting process.

Killing the Little Sisters would have been the most expedient way of collecting ADAM for personal use — but that would mean forgoing the little rewards that the rescued Sisters would leave behind for you as a form of good karma.

Yes, it can be emotionally draining playing through Bioshock 2 and its convoluted worldview — this is no simple shoot-em-up where you mow down aliens or terrorists with gay abandon.